<template>
  <div>
    <vxe-tree-select
      v-model="val1"
      :tree-config="treeConfig"
      :options="treeList"
      :option-props="{label: 'title', value: 'id'}"
      @change="changeEvent">
    </vxe-tree-select>
  </div>
</template>

<script lang="ts">
import Vue from 'vue'
import { VxeTreeSelectPropTypes } from 'vxe-pc-ui'

interface NodeVO {
  title: string
  id: string
  parentId?: string | null
}

export default Vue.extend({
  data () {
    const treeList: NodeVO[] = [
      { title: '节点2', id: '2', parentId: null },
      { title: '节点3', id: '3', parentId: null },
      { title: '节点3-1', id: '31', parentId: '3' },
      { title: '节点3-2', id: '32', parentId: '3' },
      { title: '节点3-2-1', id: '321', parentId: '32' },
      { title: '节点3-2-2', id: '322', parentId: '32' },
      { title: '节点3-3', id: '33', parentId: '3' },
      { title: '节点3-3-1', id: '331', parentId: '33' },
      { title: '节点3-3-2', id: '332', parentId: '33' },
      { title: '节点3-3-3', id: '333', parentId: '33' },
      { title: '节点3-4', id: '34', parentId: '3' },
      { title: '节点4', id: '4', parentId: null },
      { title: '节点4-1', id: '41', parentId: '4' },
      { title: '节点4-1-1', id: '411', parentId: '42' },
      { title: '节点4-1-2', id: '412', parentId: '42' },
      { title: '节点4-2', id: '42', parentId: '4' },
      { title: '节点4-3', id: '43', parentId: '4' },
      { title: '节点4-3-1', id: '431', parentId: '43' },
      { title: '节点4-3-2', id: '432', parentId: '43' },
      { title: '节点5', id: '5', parentId: null }
    ]

    const treeConfig: VxeTreeSelectPropTypes.TreeConfig = {
      transform: true,
      keyField: 'id',
      parentField: 'parentId'
    }

    return {
      val1: null,
      treeList,
      treeConfig
    }
  },
  methods: {
    changeEvent ({ value, option }) {
      console.log('选中节点', value, option)
    }
  }
})
</script>
